So I've thought I'd share a few tips and tricks I've learnt through playing the game.

1. I find that using secondary weapons as quickly as possible works well. For speedruns, the most important weapons are the Turbo's and the Wormholes, both for speed boosts.

2. Shields are another helpful item, predominantly for fighting the Leader Missiles. However, if you find yourself without a shield, you can quite often dodge by driving up a wall at the last moment. Leader Missiles don't stall you a huge amount though anyway.

3. Everyone will have their own preference in character, but the only tangible difference is the characters personal weapon. I personally find Kami the most useful, as the Ice Blades aren't deflected by the Shield, and can slow other vehicles to a much larger extent, plus if you're using Kami, it can't get used against you. Since you'll be aiming to hold first place as much as possible, Gizmo, Zero and B.O.W.'s weapons all rely on being behind other characters, so they don't end up being used as much. Karrie's Morning Star is also handy because it can work from front and back, and can work as a temporary extra shield. It also has longer range than the Ice Blades, and can be used as a good countermeasure

4. The Stasis Beam is practically useless in most cases, because you only get it when you're in first and second place, so fire it off immediately. I haven't used the Time Warp a whole lot, but I believe it slows other racers down for a while, giving you time to catch up if you're falling behind

5. If you ever see a wormhole left open, try and utilise it. It'll jump you in front of the car that the user jumped in front of, and take big chunks off your time

6. This only works in Sonic League, but if you have both slots filled, hit both weapon buttons at the same time for a double boost. Be careful though because you can easily lose control

If I think of anything else, or if you have any other ideas, I'll add them